EntityQ1402516· pop 9· linked from 13 articlesmatchstick graphSign in to savegraph that has a planar unit distance embeddingConnectionsInternational Standard Book NumberEntitymatchEntitydigital object identifierEntityInternational Standard Serial NumberEntitygraphEntityQ118398EntityOn-Line Encyclopedia of Integer SequencesEntitytreeEntityMathWorldEntitycomplete graphEntityQ22908627EntitynodeEntityplanar graphEntityHamiltonian pathEntityNP-completeEntitydegreeEntityregular graphEntityEric W. WeissteinEntityNP-hardEntityMathematical ReviewsEntityCategoriesGeometric graphsPlanar graphs